Re: refreshing RAM from EPROM

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are you sure about the copy back to ram? Icould see where once in a
while you would compare ram vs eeprom to be sure everything is still in
working order, but copy?

Re: refreshing RAM from EPROM
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Not really, no.

I designed and implemented a system that stores configuration data in a
EEPROM.  The EEPROM is read once at reset into a RAM buffer.  All of the
system's read and write accesses are from and to the RAM buffer.  A three
second timer is started any time that the RAM buffer is written and, when
that timer expires, the EEPROM is updated.  This supports a compromise
between wearing out the EEPROM with excessive writes and the desire to
keep the EEPROM up to date.

HTH

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          Michael Kesti            |  "And like, one and one don't make
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